From: Roger Sayle <roger@eyesopen.com>
Date: Sat, 11 Nov 2006 05:00:10 +0000 (+0000)
Subject: fold-const.c (operand_equal_p): Don't check for TREE_CONSTANT_OVERFLOW when comparing... 
X-Git-Tag: releases/gcc-4.3.0~8540
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85914552c7c4bf23a334ff90a443a818dc1c266e;p=thirdparty%2Fgcc.git

fold-const.c (operand_equal_p): Don't check for TREE_CONSTANT_OVERFLOW when comparing constants.


	* fold-const.c (operand_equal_p) <INTEGER_CST, REAL_CST, VECTOR_CST>:
	Don't check for TREE_CONSTANT_OVERFLOW when comparing constants.

From-SVN: r118685
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 53cc1d461f4f..693ee507ed5e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-11-10  Roger Sayle  <roger@eyesopen.com>
+
+	* fold-const.c (operand_equal_p) <INTEGER_CST, REAL_CST, VECTOR_CST>:
+	Don't check for TREE_CONSTANT_OVERFLOW when comparing constants.
+
 2006-11-10  Peter Bergner  <bergner@vnet.ibm.com>
 
 	* rtl.h (MEM_COPY_ATTRIBUTES): Copy MEM_POINTER.
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 7c769d5c42e4..e1c3c1fafd28 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -2545,24 +2545,16 @@ operand_equal_p (tree arg0, tree arg1, unsigned int flags)
     switch (TREE_CODE (arg0))
       {
       case INTEGER_CST:
-	return (! TREE_CONSTANT_OVERFLOW (arg0)
-		&& ! TREE_CONSTANT_OVERFLOW (arg1)
-		&& tree_int_cst_equal (arg0, arg1));
+	return tree_int_cst_equal (arg0, arg1);
 
       case REAL_CST:
-	return (! TREE_CONSTANT_OVERFLOW (arg0)
-		&& ! TREE_CONSTANT_OVERFLOW (arg1)
-		&& REAL_VALUES_IDENTICAL (TREE_REAL_CST (arg0),
-					  TREE_REAL_CST (arg1)));
+	return REAL_VALUES_IDENTICAL (TREE_REAL_CST (arg0),
+				      TREE_REAL_CST (arg1));
 
       case VECTOR_CST:
 	{
 	  tree v1, v2;
 
-	  if (TREE_CONSTANT_OVERFLOW (arg0)
-	      || TREE_CONSTANT_OVERFLOW (arg1))
-	    return 0;
-
 	  v1 = TREE_VECTOR_CST_ELTS (arg0);
 	  v2 = TREE_VECTOR_CST_ELTS (arg1);
 	  while (v1 && v2)